Auto Trans drops 1st gear to no drive. Resets by selecting P then back to drive.
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Joined: Dec 2014
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Auto Trans drops 1st gear to no drive. Resets by selecting P then back to drive.
1998.5 auto trans totally seems to disengage when first starting to drive from cold start.
It's been happening for a year, I just select Park then put it back in drive to start again. It can happen more than a few times.
It's nice that it snaps hard into gear on the reset. What is this? Torque converter draining of something?
It's been happening for a year, I just select Park then put it back in drive to start again. It can happen more than a few times.
It's nice that it snaps hard into gear on the reset. What is this? Torque converter draining of something?
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Joined: Nov 2001
Posts: 3,733
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From: Austria Europe
Yep, sounds like TC drainback.
Try to let the truck idle in neutral for 2 minutes before starting to drive.
Do also check fluid level, sometimes this is caused by a slightly low fluid level.
You really do not want this harsh engagement when it "snaps back into gear" because all the time with no power transmitted you ran your oil pump, converter bearings, clutches etc without lubrication.
Just my 2c
Try to let the truck idle in neutral for 2 minutes before starting to drive.
Do also check fluid level, sometimes this is caused by a slightly low fluid level.
You really do not want this harsh engagement when it "snaps back into gear" because all the time with no power transmitted you ran your oil pump, converter bearings, clutches etc without lubrication.
Just my 2c
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Joined: Jan 2007
Posts: 8,372
Likes: 172
From: Streator Illinois
1998.5 auto trans totally seems to disengage when first starting to drive from cold start.
It's been happening for a year, I just select Park then put it back in drive to start again. It can happen more than a few times.
It's nice that it snaps hard into gear on the reset. What is this? Torque converter draining of something?
It's been happening for a year, I just select Park then put it back in drive to start again. It can happen more than a few times.
It's nice that it snaps hard into gear on the reset. What is this? Torque converter draining of something?
Or once during each cold start?
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